re PR c++/51588 ([c++0x] [4.4/4.5/4.6/4.7 Regression] ICE using an enum as base class)

	PR c++/51588
	* parser.c (cp_parser_ptr_operator): Reject pointer to member of enum.

From-SVN: r182452

gcc/cp/ChangeLog

+2011-12-17  Jason Merrill  <jason@redhat.com>
+
+	PR c++/51588
+	* parser.c (cp_parser_ptr_operator): Reject pointer to member of enum.
+
 2011-12-17  Richard Henderson  <rth@redhat.com>
 
 	PR bootstrap/51072

gcc/cp/parser.c

@@ -16448,6 +16448,9 @@ cp_parser_ptr_operator (cp_parser* parser,
 
 	  if (TREE_CODE (parser->scope) == NAMESPACE_DECL)
 	    error_at (token->location, "%qD is a namespace", parser->scope);
+	  else if (TREE_CODE (parser->scope) == ENUMERAL_TYPE)
+	    error_at (token->location, "cannot form pointer to member of "
+		      "non-class %q#T", parser->scope);
 	  else
 	    {
 	      /* The type of which the member is a member is given by the

gcc/testsuite/ChangeLog

 2011-12-17  Jason Merrill  <jason@redhat.com>
 
+	PR c++/51588
+	* g++.dg/parse/enum7.C: New.
+
 	PR c++/51586
 	* g++.dg/lookup/nested2.C: New.
 

gcc/testsuite/g++.dg/parse/enum7.C

+// PR c++/51588
+
+enum A {};
+
+struct B : A {			// { dg-error "" }
+  int i;
+};
+
+int A::* p = &B::i;		// { dg-error "" }